Half to jeffeeson stalet



(No Model.) B. F. RITCHIB.

y PIPE GOUPLING. No. 338,783. Patented Mar. 301886.

Fiyi Q1 @m/fffl/ a l .fA 'Y n wahr i A v @f/9% UNITED STATES PATENT OEEICEo BENJAMIN F. RITCHIE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO JEFFERSON STALEY, OF SAME PLACE.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 338,783, dated March 30, 1886.

Application filed February 20, 1886. Seria] No.192,706. (No model.)

To all whom/ it may concern:

Be it known that I, BENJAMIN F. RITCHIE, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain' new and useful Improvements in Expansion- Joints; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this speciication.

My invention relates to an improvement in expansion pipe-joints, the object being to provide a pipe-joint that will expand or contract in dierent degrees of temperature without injury to the line of pipe; and with this end in view my invention consists in certain details of construction and combination of parts, as will be more fully described hereinafter.

In the accompanying drawings, Figure l is a sectional elevation oi' my improved expansion-joint, partly shown in outside elevation. Fig. 2 is an end view of the same.

To put myinvention into practice,I provide two large double-threaded nuts, a, and place the sameover the pipes b. Into these nuts a I screw thimbles c, which are somewhatla'rger in diameter than the pipes b,leaving a space, into which is placed a suitable packing, d. I next secure thimbles e, somewhat similar in construction, but larger in diameter, and turned to fit neatly about the rst mentioned, to the. 3 5

ends of the pipes b. I now surround these thimbles c e by a casing, f, the diameter of which is such as to leave an intervening space, in which I place packing g. I now screw the nuts a to the ends of the casing f, which com- 4o Should the line of pipes b expand, the two 45 thimbles c e have sufficient space, lc, to move toward each other, and when the pipes b contract they separate. The packing d g, together with the threaded joints, prevents the gas or liquid traveling through the pipes b 5o from escaping.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

In a line of pipe, b, the combination' ofthe 55 nuts a, having secured thereto thimbles c and suitable packing, d, the thimbles e,overlapping those before mentioned, tting neatly about the same,and secured to the ends of the pipes b, the outside easing,f, having an inner lining 6s of packing, g, substantially as shown and described.

BENJAMIN F. RITCHIE. Witnesses:

H. T.v MORRIS,

.IosiAH W. ELLs, 

